So I ordered a drag knife and starting and finishing on a straight edge seems important to a quality cut. I made a simple rectangle with rounded corners and viewed the gcode in a viewer and it wants to start on a corner. Any way to tell it to start on an edge?
Part of my strategy is to do a “waste cut” that is a straight line for the sole purpose of aligning the blade for the real cut, but this seems pointless if the blade is starting in the corner.
Assuming you are using Carbide Create, the thread below should be interesting, we discussed workarounds to “force” the entry point in toolpaths (because CC won’t let you select it arbitrarily)
For Carbide Create the most expedient thing to do is a no offset toolpath for an open path — just arrange the begin / end points so that they go past each other by a reasonable length.
I was looking into this… and don’t know how to create an open toolpath in cc. So, if I just want to cut out a rectangle with rounded corners, I just draw a rectangle with fillet (normally). How would I make that an open toolpath.
One other complaint I have is that you can’t view which direction that the cut will travel or change it.
I should clarify… I can draw lines etc and they will be open toolpaths, but don’t know how you would convert my rounded rectangle closed path into an open one where I can start on a straight and go past the start as it finishes.
If you want to just do rectangles with rounded corners, I can send or post our terminal script we wrote for dragknife cutting that starts on a straight edge at the midway point of the top edge of the cut. All of our cuts are left to right and use the Donek D3 (modified).
I will have to look into Inkscape. I messed around with NC Viewer and was able to manually edit the paths (nice to see the visual next to the code), but that would be a pain if I have to tweek anything in cc and have to manually edit again.
Oh… I did not! Would love to get the script… it has got to be easier than editing manually. However, my shapes are slightly more complicated than rectangles. I am a software guy, so might be able to edit if it doesn’t apply directly.
The above script will let you create a nc file without having to do any design, CAD/CAM work and you can load right into Carbide Motion. Saves alot of time.